clients.py httpsConnection Python version check error

[melegar]

in the init function for VerifiableHTTPSConnection in clients.py the first step is to do a python version check. However, the script only looks for python 2.6, 2.7 or 3.4. If someone is running Python version 3.5 or 3.6 the script will fail with the Unsupported Python version error.

[melegar]

I believe this error can be resolved by editing clients.py lines 431 and 454 to remove the statement "and sys.version_info.minor == 4"

[gtback]

Link to relevant code:

libtaxii/libtaxii/clients.py

Lines 430 to 431 in a865dea

	elif ((sys.version_info.major == 2 and sys.version_info.minor == 7)
	or (sys.version_info.major == 3 and sys.version_info.minor == 4)):

Also related to #222 (in that we should probably fix them both at the same time).

[gtback]

Thanks, @melegar